Nan McNamara

When several women are murdered, Rossi revisits a 25-year-old case that causes him to suspect a killer is at work again.

When an 8-year-old is found dead on the Appalachian Trail, the team searches the forests for a man targeting children.

When Adam's girlfriend is kidnapped right in front of him, he shuts out Five-0 and breaks all the rules in order to get her back; the team investigates three seemingly unconnected homicides.